This app puts notes on the lock screen—and that single change makes it surprisingly effective.

Productivity is a sore subject for a lot of people. Philosophically, the concept is a nightmare. Americans invest personal productivity with moral weight, as though human worth can be divined through ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...